lixiviate
To separate (a substance) into soluble and insoluble components through percolation; to leach.
[…]the Slaves are out in the Storm, doing their Owners’ Laundry, observing and reading each occurrence of Blood, Semen, Excrement, Saliva, Urine, Sweat, Road-Mud, dead Skin, and other such Data of Biography, whose pure form they practice Daily, before all is lixiviated ’neath Heaven.
Where it comes from
Borrowed from a Medieval Latin lixīvio, lixīviātus, or formed from the root of lixīvium, lixīvia, from lixīvius (“made into lye”), from lixa (“water, lye, ashes”).
Adapted from the Wiktionary entry lixiviate (CC BY-SA 4.0).